Removing a stack Member using the Member’s CLI
Syntax:
no stack join <mac-addr>
To use this method you need the Commander's MAC address, which is available using the
show stack
command in the Member's CLI.
Identifying the commander's MAC address from a member switch

Execute the following command in the
North Sea
switch's CLI to remove the switch from the stack:
North Sea(config)# no stack join 0030c1-7fec40